99.36: What happens to thazn/0jypf a 3 ru 11oszkji6+2q79efhe inertia of an object when its velocity is doubled?

  02.14: An intrinsic property of matter is one that does not depend on the q()9e )clfyz wruantity of matter present. Which of the following properties is NOT an intrinsic propezf(yrcl )) 9werty?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth ha(p/pd3x*hr gbs masg*br 3p/dx(ph s $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall myf+o0 v0x9slnear the surface of the Earth. What is the magnitude of the gravitational force acting on the earth by the sphere? The Earthxfymosl+00 9 v mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible fsmx 8y1j,s;,8)6hy/l opabefkp:s wzor an object’s velocity to increase while its acceleration decreas sm y z ,:ox),eaf8;p/wlb18 yspk6sjhes?

  00.11: A certain particle undergoes erratic motion. pg ekc 7l;ld-eq.d -*w ;eh,ztAt every point in its motion, th-,-l. zee;qc; tl7pegd*h dkwe direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended in the air at the end of a string hel.+p5ycj wfc1-sm i2 nybzu,lh / /jv3de/ xt*pd by a person. The person pulls on the string uniformly accelerating the block upward for a short time. Duri cv /bpuhwnydp 1 tj/,/ejmxc i+.yfl523z-s *ng this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the string on the block?

  07.18: In which one ov,wuwex qpw:(tu 8 /z :id7e/pf the following situations is the net force constantly zero on/w vdtww:x q i8/(:7e,pezuup the object?

  13.28: An object is in free fall close to the ground. A personno(3r 8aom8n4diaz u9 . lj2pu intervenes and slows the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitude of the object’s accele pz.8i 9 unl8 udmnj2(4ara3ooration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forceselzwluvh.dn;9;b 662/kan vc , F1 of 30 N, F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the res.ne wbzdl 2;69vuan/ ;h cvkl6ultant ofF1 and F2 is

  01.07: A force of 6 Newtons and a force of 10 newtons can be c/k5tj dnr :.euombine to form a resultant with a magnitude jd5/entu.r k: of which of the following

  10.06: Which of the following statements i7b(kjt3x 7u xxs most closely associated with Newton’xuxbx3(k7j t7 s Third Law of Motion?

  95.06: The reaction force does not cancel the action force+lkv l y/,m.bwoz m8c+ c)g-fvgb)h69cg h2je because:

  14.14: A box rests on the floor of an elevator. The elevatoc0x pl7(pi3z*h1g tyv ,ocf 4nr is accelerating upward. Whi*( y0pg1c ol t phi,zvx4cn7f3ch one of the following choices best represents the Newton’s Third Law pair force to the gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with cons)ikc(yppzswbv :9x sid fk 80r+v/p-)tant speed. Which one of the following choices correctly describes the Newton’s Thircks) vp0-f+:x 8iv ybs(d 9w /pzpk)ird Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrru4:gea(x 1q qy0/ef yown by a pitcher with a speed of 35 m/s. The batterswings and hits the ball. The magnitude of the force that the ball exe/:(grq yae4q y0eu1fxrts on the bat is always

  11.13: A physics book sits at rest on adqv6,uac hhars +a t:o)2gs.1 table. On top of the book is a calculator, also at rest. Which one of the follo ,uhcsgqv+a ds ).r1 o2aaht6:wing choices is the Newton’s Third Law pair force to the force that the table exerts on the book?

  05.06: The students in a Physics I class were in lab conducting an exper skia-,*i itv)sy25yx iment related to Newton's Secondkv) y5yii2sta ,x*i -s Law. The collected data were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object wereza,i e r6c):rs doubled while at the same time the mass of the object was halved,then the accelerati,zs re6:ar)c ion of the object is

  96.15: A car whose mass is 150iav0p lz7l,5)rviy0q2- wf bl 0 kg is accelerated uniformly from rest to a speed of 20 m/s in 10si b7 v0w2)f,l a i-z50rqlypvl. The magnitude of the net force accelerating the car is:

  99.05: A tractor-trailer truck is traveling down the road. The mass of *- ;kmji1tafim8nwr* the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer appl; aj*nmf8 m*1 wk-riities on the tractor is

  99.16: Which of the following 4eejggk 35 qw:principles best explains why large tractor-trailer trucks generw:qjg kg3 4ee5ally accelerate much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on a frictionless rink throws a 2 kilograv+ cjz5t)x k/hm ball, giving the ball a velocity of 10.0 m/s. Which statement describes the subsequent moti)x/tzck+ 5jvhon?

  00.13: An object near the surface of thev*s znwuzv*f -y x(w:1 earth with a weight of 100 newtons is acce* v n *zws(1x-:vzuwyflerated at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is 1200 kg is accelerated from rest by a constant force q*p7pdf.6hkcfqzz 7/of 2400 N.q. 7qppkz6f*h/7cfz d What is the speed of the car 8.0 s after beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rougy6dv+ks, osfz2czs9(h horizontal floor before coming to rest. The frictional force acting on the block is 3.cfy9 z z2v(o 6ksssd,+0 N. How far does the block slide before coming to rest?

  95.38: A block with initial velocity 4.0 m/s slid -bi;gjkgl/ b7es 8.0 m across a rough horizontal floor before coming tggj lbkb;-7 i/o rest. The coefficient of friction is:

  09.21: A 20.0 kg box remains at rest on a z0ozbg6s ffg+sg)a)rv/io 63horizontal surface while a person pushes directly to th sagf6 bo3gfgzsi 6+)v )or/0ze right on the box with a force of 60N. The coefficient of kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially moving at 8 m/s accelerates )ws ricmffq7pj16z(l-t/o-suniformly to rest on a horizontal surface. The block travf)i/ptwlr 1 -cm(zsq-6fo j7sels a distance of 12.0 m during the slide. Which one of the following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides acry bt9h wo od,3m7d.5m(cv akp6oss a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of bht oyk7pm(c. voad35d,9w 6m kinetic friction between the tires and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides ac/,hp ip ny/yaydh+20 aross a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction bet i,ny+d2a hphyy0 ap//ween the tires and the dry road is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes an emergency stop by slamming on the car's braksw9 9i3rc( xxaes and skidding to a stosarwcix 99x3( p. How far would the car have skidded if it had been traveling twice as fast?

  99.39: The driver of an j9/,s l4n u41kgcyzo +dqxeg-automobile must carefully control each of the following devices. Which of these devices can cause an acceleration in a moving o+yz l419qg ,gudcj4x /ns-ekcar?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net forcehovfm1ht ;(60 43zgm lxlkq4 q on a rocket with a weight of 15000 newtons is 24000 newtons. About how much time is needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of t 4tmo (k z6hxv0qgl mlh4;1fq3he Earth at takeoff?

  07.21: A box slides to the right across a horizontal floor. A person called Ted j a9 gayciqa8em21tt)t( p70xdmbz(a8z mu:- exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank thetzm 0pqze2d:8ia am (9j a7)ycum(axtgt b 81- sizes of these three forces exerted on the box.

  02.27: The diagram below shows v7h -st q -;35jjacdmnthree roller coaster tracks of equal length. Assume that on all tracks the roller coaster carts start from rest at the same elevmt3 sa7-- j ;dhnvc5jqation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equal len*k oxo7hvtyk.ey8hq( 0qom0h d3loe k86r.q2 gth. Assume that on all tracks the roller coaster carts start from rest at theq8h 7yh. (oky0oq6lk2 deqo 0*x.roktm8v3he same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlessly along the curvet 2+g gcr;+k3)go alpuldc 8x5d track from point A to point C under the inflok t;)lagc2p+g3d5 8lc uxr+guence of gravity. What would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the f e ll7nb7-ivw(loor by a rope which makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is required to move the crate at a const(bviw- n e7ll7ant speed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against ax8,5h/yjw kkkit.0t*;u idwr wall by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 0.50. What is true of the friction acting on thidwk, k uk/.y8 wxjt*0t5r;hi e block after a time of 1 second?

  05.10: A homeowner pushes*7ojvd*jzknlxbiz/zo qa:h4,h u m y// c7 p)( a lawn mower across a horizontal patch of grass with a constant speed by applying a force P. The arrows in the diagr,q4c o a/)* j:olk v//pu mzzhb(yin*j7xzhd7am correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a table. Neither is moving. Wq+d4hiug: ,5bijhbap q661d hhich of the following statementi4 65hdqiud +,b:g qbh16p hjas concerning this situation is CORRECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pulledht3 9uqf bygeo+-g. )h up a hill with an incr9og htgy 3h b)u.q+ef-easing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?